Is there anything called NADPH 2?!

  What is the end product of light reaction ?

ATP, NADPH2 and O2

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Please find below the solution to the asked query  

Yes, NADPH2 exists. 
It is the reduced form of nicotinamide adenine dinucleotide phosphate that serves as an electron carrier during light reaction of photosynthesis. 

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nicotinamide adenine dinucleotide hydrogen phosphate 
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NADPH is the product of light reaction when light reaction occurs it produces NADPH and ATP whereas when dark reaction occurs it produces NAPPH and ATP
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I answered this implicitly in a comment to my answer to:?Light and Dark Reaction of photosynthesis?. Anyway:

There is no such thing as NADPH2. There is only NADP+?and NADPH. Consult?Wikipedia?or a reputable text such as?Berg.

The nicotinamide portion of NADP that undergoes oxidation and reduction is exactly the same as in NAD. The changes undergone are:

The error either comes from confusion with the other redox cofactor, FAD / FADH2, or the fact that two electrons are involved in the reduction of NADP:

NADP+?+ H+?+ 2e ? NADPH
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Above is correct
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